Key Product Details

Species Reactivity

Human

Applications

Western Blot

Label

FITC (Excitation = 495 nm, Emission = 519 nm)

Antibody Source

Monoclonal Mouse IgG2B Clone # 474421

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

View all GRP78/HSPA5 Antibodies »

Product Specifications

Immunogen

E. coli-derived recombinant human GRP78
Met1-Leu654
Accession # P11021

Specificity

Detects endogenous human GRP78 at 78 kDa in Western blots.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2B

Description

This conjugate is made on demand and is not held in inventory. Each order represents a unique lot. All conjugates are generated using validated conjugation protocols and meet strict degree of labeling (F/P) specifications; additional information is available upon request. The antibody concentration is provided on the individual product label.

For specialized conjugation needs, like large quantities, specific concentrations, and defined F/P ratios, bulk and custom antibody conjugation services are available.

Applications for GRP78/HSPA5 Antibody (474421) [FITC]

Application
Recommended Usage

Western Blot

Optimal dilutions of this antibody should be experimentally determined.
Application Notes
Recommended applications are based on validated applications from the unconjugated base product MAB4846. This conjugated antibody is not kept in inventory and is made to order using validated conjugation protocols.

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Formulation

PBS

Preservative

0.05% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C in the dark.

Background: GRP78/HSPA5

Within the ER, misfolded proteins are detected by Bip (GPR78). In the presence of misfolded proteins, GPR78 disscociates from PERK, allowing it to homodimerize and autophosphoyate. In its dimerized phosphorylated form, PERK phosphorylates eIF2. The phosphorylation of eIF2 blocks the majority of translation to prevent the continued accumulation of protein in the ER. GRP78 also binds to IRE1 and ATF6 under normal ER conditions, but dissociates upon accumulation of misfolded proteins. Unbound ATF6 is translocated to the gogli where it is converted into a cleaved, active form. The cleaved form of ATF6 is then able to up regulate transcription of UPR genes including XBP1. Activated IRE1 acts as an endoribonuclease to an intron from XBP1 transcripts. The XBP1 splice variant codes for an active transcription factor which activates transcription of P58IPK. P58IPK is a HSP40 protein which binds to and inhibits PERK. Thus, if the accumulated misfolded proteins have been removed, P58IPK acts to shut down the UPR by removing the block to translation.

Long Name

75 KD Glucose Regulated Protein

Alternate Names

BIP, HSP70-5, HSPA5

Gene Symbol

HSPA5

Additional GRP78/HSPA5 Products

Product Documents for GRP78/HSPA5 Antibody (474421) [FITC]

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot or batch number in the search box below.

Download SDS

Product Specific Notices for GRP78/HSPA5 Antibody (474421) [FITC]

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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